Chelated trace elements are made of chelating agents and essential trace elements for plants, such as chelated zinc, chelated iron, chelated manganese, chelated copper, etc. Chelated trace element fertilizers are better than inorganic trace element fertilizers. They are not easy to be fixed in soil, easily soluble in water, and do not dissociate. They can also be mixed with other solid or liquid fertilizers without chemical reaction, which does not reduce the fertilizer efficiency of any fertilizer.

The green and environmentally friendly integrated trace elements produced by Yuanlian Chemical are:
Sodium polyaspartate (PASP Na), potassium polyaspartate (PASP K), calcium polyaspartate (PASP Ca), magnesium polyaspartate (PASP Mg), zinc polyaspartate (PASP Zn), etc.
Sodium iminodisuccinate (IDS Na), potassium iminodisuccinate (IDS K), iron iminodisuccinate (IDS Fe), calcium iminodisuccinate (IDS Ca), magnesium iminodisuccinate (IDS Mg), zinc iminodisuccinate (IDS Zn), etc

Traditional synthetic trace elements include:
Iron Ethylenediamine Dio-Hydroxyphenylacetate (EDDHA Fe)
Iron ethylenediaminetetraacetate (EDTA Fe)
Copper diaminetetraacetate (EDTA Cu)
Manganese diaminetetraacetate (EDTA Mn)
Zinc diaminetetraacetate (EDTA Zn)
Calcium diaminetetraacetate (EDTA Ca)
Magnesium diaminetetraacetate (EDTA Mg)
Iron ethylenetriaminepentaacetate (DTPA Fe)
Ammonium ferric diethylenetriamine pentaacetate (DTPA Fe Ammonium)